<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
  import echarts from 'echarts'
  require('echarts/theme/macarons') // echarts theme
  import resize from './mixins/resize'

  export default {
    mixins: [resize],
    props: {
      className: {
        type: String,
        default: 'chart'
      },
      width: {
        type: String,
        default: '100%'
      },
      height: {
        type: String,
        default: '350px'
      },
      autoResize: {
        type: Boolean,
        default: true
      },
      chartData: {
        type: Object,
        required: true
      }
    },
    data() {
      return {
        chart: null
      }
    },
    watch: {//督促图表做出改变
     chartData: {
        deep: true,
        handler(val) {//换数据
          this.setOptions(val)
        }
      }
    },
    mounted() {//渲染完成函数
      this.$nextTick(() => {
        this.initChart()
      })
    },
    beforeDestroy() {
      if (!this.chart) {
        return
      }
      this.chart.dispose()
      this.chart = null
    },
    methods: {
      initChart() {
        this.chart = echarts.init(this.$el, 'macarons')//初始化
        this.setOptions(this.chartData)//传递数据
        console.log(this.chartData)
      },
      setOptions(data) {//两个轴的数据
        this.chart.setOption({
          title:{
            text:'近七日新增阅读量变化',
            x:'center',
            textStyle: {
              fontSize: 18,
              fontStyle: 'normal',
              fontWeight: 'normal',
            },
          },
          xAxis: {
            data: data.xDay,
            boundaryGap: false,
            axisTick: {
              show: false
            }
          },
          grid: {
            left: 10,
            right: 10,
            bottom: 20,
            top: 30,
            containLabel: true
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross'
            },
            padding: [5, 10]
          },
          yAxis: {
            axisTick: {
              show: false
            }
          },
          legend: {
            // data: ['expected', 'actual'],//去掉一条线的
            data: ['expected']
          },
          series: [
            {
              name: '新增量', itemStyle: {
                normal: {
                  color: '#ed556a',
                  lineStyle: {
                    color: '#5698c3',
                    width: 2
                  }
                }
              },
              smooth: true,
              type: 'line',
              data: data.yCount,//传来的数据
              animationDuration: 2800,
              animationEasing: 'cubicInOut'
            },
            //注释掉第二条线
            // {
            //   name: 'actual',
            //   smooth: true,
            //   type: 'line',
            //   itemStyle: {
            //     normal: {
            //       color: '#3888fa',
            //       lineStyle: {
            //         color: '#3888fa',
            //         width: 2
            //       },
            //       areaStyle: {
            //         color: '#f3f8ff'
            //       }
            //     }
            //   },
            //   data: actualData,
            //   animationDuration: 2800,
            //   animationEasing: 'quadraticOut'
            // }
          ]
        })
      }
    }
  }
</script>

<style scoped>
  .myFont{
    font-size: 10px;
  }
</style>
